Charles Leclerc is weary that Ferrari's tyre troubles have not gone away even though he was within three laps of winning the British Grand Prix.
Leclerc appeared to have strong pace throughout both stints on the medium and hard tyres at Silverstone as well as Saturday's sprint race. However, he thinks there is more to understand about the Pirelli rubber.
"There’s been a big investigation after France to try to understand exactly why we were struggling that much with those front tyres," Leclerc told RacingNews365.com and other members of the press.
"I don’t think we get that answer yet. So yes, we are much better at Silverstone but I don’t think it is because we found the complete answer of what happened in France.
"The investigation is still going on and we are still working hard on it. Even though we’ve had a good day on Sunday we don’t forget about the bad day in France.
"Once we understand the full extent of why we were slow in France then I’m pretty sure we will do a big step as a team and it will help us to reproduce this type of performance as we did today."
Leclerc was overtaken by eventual race winner Lewis Hamilton at Copse corner after having a snap of oversteer. The Ferrari driver admits there was not much more he could do and was pushing 100 percent for each of the 52 laps around Silverstone.
"On the medium we were surprisingly good," said Leclerc. "The car felt incredible there and we were very very quick. Then on the hard, it’s not like something felt especially weak.
"It felt quite good but whenever I started to hit the traffic, I could feel we were on a bit more fragile tyre and we seemed to suffer a bit more.
"By being [behind] those guys, even though it was quite far I could feel the rear of the car was not as stable as I wanted it to be and this made us lose a little bit the pace that we had before.
"But overall, even when everything felt good, Lewis was just much quicker than us on those hard tyres."